Magnetic molecules based
on rare earth ions are promising hardware to perform theoretical and
experimental studies with the final goal of achieving coherent spin
control. In this context, we employ as theoretical tools the
home-made programs MAGPACK and SIMPRE.[1] Experimentally, we rely
mostly on magnetometry for characterization -complemented when
available by spectroscopic techniques- and pulsed-Electronic
Paramagntic Resonance for the coherent manipulation. In a recent
experimental study, it was possible to increase the number of
coherent rotations tenfold through matching the Rabi frequency with
the frequency of the proton for the polyoxometalate single ion magnet
[GdW30P5O110]14-.[2] We have been recently able to understand the
magnetic anisotropy of lanthanoid complexes using an effective
point-charge model.[3] Building upon this understanding, we are now
proposing a new setup for the electrical control of spin qubits
embodied by mononuclear lanthanide complexes, via the change in the
extradiagonal parameters of the crystal field Hamiltonian. We
rationalize the expected results with the help of ab initio
calculations and an effective point charge model. We also propose a
Quantum Error Correction experiment inspired by the Shor code using a
trinuclear lanthanide complex in an ENDOR setup. We detail how the
combined electron-nuclear spin manifold in this system can be thought
of as equivalent to the 9 qubits as required by Shor's code. Finally,
we recently achieved the spatially regular organisation of three
different spin qubits, reminiscent of Lloyd's “global control”
scheme for quantum computing.[4]